Push/pop `noreturn` when it is a macro.

This is coming from C's stdnoreturn.h which seems to be unguarded for C++ in
some toolchains.

PiperOrigin-RevId: 583165958

src/google/protobuf/port_def.inc

@@ -790,6 +790,13 @@ static_assert(PROTOBUF_ABSL_MIN(20230125, 3),
 
 // ThreadSafeArenaz is turned off completely in opensource builds.
 
+// noreturn is defined as a macro in C's stdnoreturn.h
+#ifdef noreturn
+#define PROTOBUF_DID_UNDEF_noreturn
+#pragma push_macro("noreturn")
+#undef noreturn
+#endif
+
 // autoheader defines this in some circumstances
 #ifdef PACKAGE
 #define PROTOBUF_DID_UNDEF_PACKAGE

src/google/protobuf/port_undef.inc

@@ -92,6 +92,11 @@
 
 // Restore macros that may have been #undef'd in port_def.inc.
 
+#ifdef PROTOBUF_DID_UNDEF_noreturn
+#pragma pop_macro("noreturn")
+#undef PROTOBUF_DID_UNDEF_noreturn
+#endif
+
 #ifdef PROTOBUF_DID_UNDEF_PACKAGE
 #pragma pop_macro("PACKAGE")
 #undef PROTOBUF_DID_UNDEF_PACKAGE